Design, build, and enhance features within Merchant Central using PHP/Laravel and React Develop efficient database queries and optimize MySQL performance Write unit, integration, and end-to-end tests Document critical business logic, application workflows, and key architectural decisions Collaborate with Product Managers to refine requirements and contribute to technical solution design Participate in code reviews Work with SRE and QA teams to ensure software is observable, resilient, secure, and production-ready Diagnose and resolve incidents, defects, and performance bottlenecks Contribute to continuous improvement of development processes, tooling, and engineering practices